Gaya APA

Gwartney, R, S, A, H, S, &, J, D. (1979). Coursebook For Economics Private And Public Choice Second Edition (Pertama). New York: Academic Press.

Gaya MLA

Gwartney, Richard, Stroup,, A., H., Studenmund, &, James, D.. "Coursebook For Economics Private And Public Choice Second Edition". Pertama New York: Academic Press, 1979. Text.